Daewoo KOR-6185 Service Manual page 22

2)
Does the fan motoro when you shut the door and turn the timer?
YES
Does the oven lamp lgith?
Does the turntable turn?
YES
NO microwave
oscillation.
Check continuity
of filament of
magnetron.
Poor
continuity
Check continuity
of filament of
magnetron
*Do not operate when you check this continuity.
Check continuity fil-
ament tap (3.3V) of high
NO
voltage transformer.
continuity
*Normal reading should be approx. 0Ω.
Check the diode
for cintinuity
in the reverse
and normal directions.
*Meter with 6V or higher voltage batteries
should be used to check the normal
direction resistance of the diode.
NO GOOD
Check the isolation of
filament winding of high
voltage transformer
GOOD
Faulty magnetron
NO
NO
continuity
NO
continuity
continuity
in the
reverse
direction
23
Replace or repair
oven lamp,
turntable motor.
Replace
magnetorn
Replace
high voltage
transformer
Replace
high voltage
diode.
Replace high voltage
transformer
Replace
Magnetron